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33 lines
1.3 KiB
33 lines
1.3 KiB
import { Observable } from '../Observable'; |
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/** |
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* The Max operator operates on an Observable that emits numbers (or items that can be compared with a provided function), |
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* and when source Observable completes it emits a single item: the item with the largest value. |
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* |
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* <img src="./img/max.png" width="100%"> |
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* |
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* @example <caption>Get the maximal value of a series of numbers</caption> |
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* Rx.Observable.of(5, 4, 7, 2, 8) |
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* .max() |
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* .subscribe(x => console.log(x)); // -> 8 |
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* |
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* @example <caption>Use a comparer function to get the maximal item</caption> |
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* interface Person { |
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* age: number, |
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* name: string |
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* } |
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* Observable.of<Person>({age: 7, name: 'Foo'}, |
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* {age: 5, name: 'Bar'}, |
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* {age: 9, name: 'Beer'}) |
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* .max<Person>((a: Person, b: Person) => a.age < b.age ? -1 : 1) |
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* .subscribe((x: Person) => console.log(x.name)); // -> 'Beer' |
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* } |
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* |
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* @see {@link min} |
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* |
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* @param {Function} [comparer] - Optional comparer function that it will use instead of its default to compare the |
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* value of two items. |
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* @return {Observable} An Observable that emits item with the largest value. |
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* @method max |
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* @owner Observable |
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*/ |
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export declare function max<T>(this: Observable<T>, comparer?: (x: T, y: T) => number): Observable<T>;
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